Air pump valve



July 26, 1932. A. RICHTER AIR PUMP VALVE Filed May 2.7, 1951 Patented July 26, 1932 warren STATES.

ALWI'N RICHTER, OF LEIPZIG, GERMANY AIR PUMP VALVE Application filed May 27, 1931, Serial No.

whereby it is connected to the cylinder, and

at the upper end with a nipple for delivering the air, the casing being fitted with two ball valves of unequal diameters, the smaller one being arranged in a seat above a valve chamher under the delivery nipple, and the larger one in a seat under the chamber, the casing having vertical passages through which the valve chamber communicates with the supporting nipple and through the latter with a cylinder, and radial passages through which the lower valve seat communicates with the atmosphere.

Fig. 1 of the accompanying drawing represents a vertical section of the apparatus, and

Fig. 2 is a cross-section thereof.

The air pump valve comprises an upright casing (Z provided at its lower end with a supporting nipple a whereby it can be mounted, for instance in place of one of the sparking plugs, on the respective cylinder of an internal-combustion engine. A chamber c in the lower part of the casing communicates through a passage 6 in the nipple a with the cylinder. A plug 0, which screws into a flange f in the upper part of the casing, carries a delivery nipple r and forms a valve chamber m between it and the casing. Under said valve chamber the casing has a recess 6 for the reception of a large ball 72. which rests in a seat 9 and forms'the inlet valve, the seat being in communication with the atmosphere through radial passages i in the casing. Between the radial passages 2' there are vertical passages Z through which the valve chamber communicates with the chamber 0 and the passage 6. The plug 0 is formed with a seat p for a small ball g which acts as a delivery valve. The nipple v has a passage 8 through which the compressed air is delivered. 1

The engine draws in air through'the pas- 540,377, and in Germany March 13, 1930.

sages 2', past the valve it, through the valve chamber m, through the passages Z, through the chamber 0, and through the passage 6. On the return stroke of'the piston the air returns through the passage 1), the chamber 0, and the passages Z to the valve chamber m, and as the valve it does not allow a downward flow of the air, the latter will be forced though the delivery passages pastthe valve g.

I claim:

An air pump valve of the character described, comprising an upright casing; a supporting nipple at the lower end of the casing; a delivery nipple at the upper end of the casing; said casing having a valve chamber and two valve seats, one above and the other below said chamber; ball valves in. said seats, a smaller one for the upper seat and a larger one for the lower seat; the upper seat being in communication with the delivery nipple, the casing having vertical passages through which the valve member communicates with the supporting nipple, and radial passages through which the lower valve seat communicates with the atmosphere.

ALWVIN RICHTER. 

